Wooden sheet-piling.



110.7852116. -BATBNTED MAR.21,1905. H. WITTBKIND.

l WOODENl SHEET FILING.

APPLIOATION FILED MAY a1, 1904.

- 2 SHEETS-SHEET 1.

PATENTED MAR. 21, 1905.-

, l H. WITTEKIND.

WOODEN SHEET FILING. ABPLIOATION FILED lMAY 31, 1904.

- 2 SHEETS-SHEET 2..

o to 0b o .N m N UNITED STATES Patented March 21, 1905.

HENRY WITTEKIND, OF CHICAGO, ILLINOIS.

WOODEN SHEET-FILING.

SPECIFICATION forming part of Letters Patent No. 785,246, dated March21,1905.

Application filed May 31,1904. Serial No. 210,399.

part of 'this specification.

My invention relates in general to sheetpiling for use in constructingcaissons, coiferdams, foundations of buildings, wharfs, and similarstructures, and more particularly to wooden sheet-piling.

The primary object of my invention is to provide a strong andserviceable sheet-pilingconsisting in interlocking sections adapted tobe separately driven, the sections being composed of pieces of timberrigidly united together and having vertical grooves in their edges inwhich are received tongues or tenons on the adjoining sections.

A further object of my invention is to provide a wooden sheet-pilingwhich will be simple in construction, inexpensive in manufacture, andeiiicient in use.

My invention, generally described, consists in a plurality 'ofinterlocked vertical sections, each section composed of a plurality ofpieces of timber securely fastened together, a aring tongue projectingfrom one edge of the section and a corresponding groove formed in theother edge of the section.

My invention will be more fully described hereinafter with reference tothe accompanying drawings, in which the same is illustrated as embodiedin several convenient and practical forms, and in which-- Figure l is across-sectional view showing one section and a portion of an adjacentinterlocked section. Figs. 2, 3, 4, and 5 are similar to Fig. 1, showingmodified embodiments Of my invention; and Figs. 6, 7, and 8, sectionalviews of individual sections of Wooden sheet-piling embodying differentspecific forms of my invention.

Referring to Fig. 1, reference characters A' and B' designate pieces oftimber spaced apart by an interposed piece of timber C'. The threepieces of timber are rigidly secured together by suitable fasteningdevicessuch, for instance, as bolts F. The width of the piece of timberC' is less than the width of the timbers A' and B', so that the sideedges of each of the latter timbers project beyond the side edges of theintermediate timber. Secured to the portion of the timber B' whichprojects beyond one side of the intermediate timber C' is a dovetailstrip D', while a similar dovetail strip Eis rigidly secured to theportion of the timber A' which projects beyond the opposite side edge ofthe intermediate timber. Any suitable fastening devices may be employedfor securing the dovetail strips to the timbers A' and B'-such, forinstance, as spikes f. As the dovetail strips flare outwardly, adovetail Agroove is formed between the portion a' of the timber A',which projects beyond the intermediate timber and the dovetail strip D',while a corresponding dovetail groove is formed between the portion b'of the timber B', Which projects beyond the intermediate timber and thedovetail strip E'. The portions d and e' of the dovetail strips D' andE', which project beyond the corresponding timbers B' and A', correspondto the dovetail grooves, so that the sections may be interlocked, asshown in Fig, l, and thereby securely united together both by theengagement of the dovetail strips with the corresponding dovetailgrooves and by the contact between the abutting edges of the timbers A'and B' in the adjacent sections.

In constructing sheet-piling of sections such as above described thesections are successively driven. Each section before being driven isinterlocked at its lower end with the top end of the previously-drivensection.

In Fig. 2 I have illustrated a modiied embodiment ofmy invention inwhich only two pieces of timber A2 and B2 are employed, the dovetailprojections D2 and E2 being formed vintegrally with the timber B2 andthe timber A2 overlapping the timber B2, so as to form a dovetail groovebetween the same and the projection D2, in which is received thedovetail projection E2 of the adjacent section.

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In Fig. 3 is illustrated a modification in which each section iscomposed of four planks` secured together by bolts F or other suitablefastening devices. The plank B3 projects to one side of the section andhas secured thereto a strip D3, spaced a short distance away from theedge of the intermediate plank C3. The plank A3 projects to the oppositeside of the section from the strip D3 and has secured thereto anangle-beam E3, which, together with the projecting portion g3 of theplank G3, forms a channel or groove conforming in cross-section to thetenon or tongue formed by the projecting portion of the plank B3 and thestrip D3, secured thereto.

In Fig. 4 each section of the piling is formed of three planks securedtogether by suitable fastening devices-such, for instance, as bolts F.The intermediate plank B* projects to one side of the section and hassecured' thereto a strip D4. An L-beam E* is secured to the timber C4and projects inwardly around the edge of the section opposite to thestrip D4, thereby forming, in conjunction with the projecting portion g4of the timber G4, a channel or groove adapted to receive the tongueconsisting in the strip D4 and adjacent portion of the timber B4 on theadjacent interlocking section.

The modification shown in Fig. 5 consists in a section composed of fourplanks rigidly secured together by bolts, one plank, A5, of whichprojects to one side of the section and has secured thereto a strip D5,spaced apart from the ends of the intermediate planks C5 and B5 and fromthe projecting portion g5 of the plank G5 a distance to form an L-shapedchannel corresponding in cross-section to the L-shaped tongue projectingfrom the opposite side edge of the section formed by the strip E and theprojecting portion of the intermediate plank B, to Which such strip isrigidly secured.

In Fig. 6 the section is composed of two, pieces of timber, one ofwhich, A", has formed integrally therewith L-shaped tongues D and Ff. Aplank Gr6 is rigidly secured to the timber A and projects a distancecorresponding to the tongue D, forming in conjunction therewith anL-shaped groove conforming to the L-shaped tongue EG.

In Fig. 7 the section is composed of three planks bolted together, oneof which, A7, projects to one side of the section and has securedthereto a strip D7, the inner edge of which is spaced apart from theadjacent edge of the intermediate plank C7. The plank B7 extends to theopposite side of the section from the strip D7 and has secured rigidlythereto a strip IC7, which, together with the adjacent edge of theintermediate plank C7 and the projecting portion a7 of the plank A7,forms a channel corresponding in cross-section to the tongue projectingfrom the opposite side of the section and formed by the strip D7 and theadjacent portion of the plank A7.

The embodiment of the invention shown in Fig. 8 consists in a sectioncomposed of four planks rigidly secured together by bolts F. The plankA8 projects to one side of the section and has rigidly secured to theinner face thereof a strip DS, spaced apart from the corresponding edgeof the intermediate planks C8 and B8 and from the projecting portion ofthe plank G8 to form an L-shaped channel conforming in cross-section tothe tongue projecting from the opposite side edge of the section andcomposed of the strip Es, rigidly secured to the projecting portion ofthe plank B8.

Each of the embodiments of my invention above described consists in asection composed of a plurality of planks, the pieces of timber rigidlybolted together and having at one edge a channel or groove conforming incross-section to a tongue or tenon projecting from the opposite sideedge of the section. It will be further noted that in each of thevarious sections the projecting tongue is of greater thickness at itsouter edge than adjacent the section,so that when it is interlocked withthe groove in the adjoining section of a sheet-piling a secure union iseffected.

From the foregoing description it will be observed that I have inventedan improved wooden sheet-piling consisting in a plurality of interlockedsections capable of being individually successively driven and whendriven .forming a piling simple and economical in construction andstrong and durable in use.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

1. A wooden sheet-piling comprising a plurality of interlocked verticalsections each section consisting in a plurality of pieces of timberrigidly secured together and having a tenon projecting laterally fromone edge of greater thickness at its outer edge than adjacent thesection and a groove in its opposite edge corresponding in cross-sectionto the cross-section of said tenon.

2. In a wooden sheet-piling, a section comprising a plurality ofvertical pieces of timber rigidly secured together having a tenonprojecting laterally and of greater thickness atits edge than adjacentthe section and a groove in the other edge of the section correspondingto the cross-section of said tenon.

3. In a section for Wooden sheet-piling, the combination with aplurality of vertical planks one of which projects laterally to one sideof the section, means for rigidly securing said planks together, avertical strip secured to said laterally -projecting portion of one ofsaid planks and forming therewith a tenon, the opposite side edge of thesection having a groove of a cross-section corresponding to said tenon.

4. In a section for Wooden sheet-piling, the

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combination with a plurality of Vertical planks one of which projectslaterally to one side of forming therewith tenons, the side edges of thesection having grooves corresponding in cross-section to sald tenons.

5. In a section for sheet-piling, the combil t1on 1n the presence of twoWitnesses.

nation with three vertical planks the intermediate one of which being ofless Width than the outer planks, means for rigidly securing said plankstogether, a Vertical strip secured to the inner surface of the portionof one of said outer planks Which projects to one side of the section, asecond vertical strip secured to the inner surface of the portion of theother outer plank which. projects to the opposite side of the section,the strip on one plank forming With the projecting portion of the otherplank a groove corresponding in cross-section to the tenon formed by theother strip and the projecting portion of the plank to which it issecured.

In testimony whereof I sign this specifica- HENRY WITTEKIND. Witnesses:

GEO. L. WILKINSON, CLARA C. CUNNINGHAM.

